74568-19-7Relevant articles and documents
Ultra-Low Molecular Weight Photoswitchable Hydrogelators
Larik, Fayaz Ali,Fillbrook, Lucy L.,Nurttila, Sandra S.,Martin, Adam D.,Kuchel, Rhiannon P.,Al Taief, Karrar,Bhadbhade, Mohan,Beves, Jonathon E.,Thordarson, Pall
supporting information, p. 6764 - 6770 (2021/02/11)
Two photoswitchable arylazopyrozoles form hydrogels at a concentration of 1.2 % (w/v). With a molecular weight of 258.28 g mol?1, these are the lowest known molecular weight hydrogelators that respond reversibly to light. Photoswitching of the E- to the Z-form by exposure to 365 nm light results in a macroscopic gel→sol transition; nearly an order of magnitude reduction in the measured elastic and loss moduli. In the case of the meta-arylazopyrozole, cryogenic transmission electron microscopy suggests that the 29±7 nm wide sheets in the E-gel state narrow to 13±2 nm upon photoswitching to the predominantly Z-solution state. Photoswitching for meta-arylazopyrozole is reversible through cycles of 365 nm and 520 nm excitation with little fatigue. The release of a rhodamine B dye encapsulated in gels formed by the arylazopyrozoles is accelerated more than 20-fold upon photoswitching with 365 nm light, demonstrating these materials are suitable for light-controlled cargo release.
Complexes of Zn(II) containing (o-)/(p-) carboxylato phenyl azo pentane 2,4-dione and 2,2′ bipyridine as ligands: Synthesis, characterization, colorimetric and fluorometric modulation in the presence of Ag+ ions
Amin Hasan, Md.,Kumari, Niraj,Kumar, Pankaj,Pathak, Brajesh,Mishra, Lallan
, p. 306 - 313 (2013/04/10)
Azo-enol based ligands 2-[N′-(1-acetyl-2-oxo-propylidene) hydrazino]-benzoic acid (L1H2) and 4-[N′-(1 acetyl-2 oxo-propylidene)-hydrazino]-benzoic acid (L2H2) and their complexes [Zn(L1H)2(
Selective nitration of hydrazono group
Jain,Agarwal,Shrivastava
, p. 204 - 206 (2007/10/02)
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